Synthesis and bioactivity evaluation of rhodanine derivatives as potential anti-bacterial agents
作者:Ming-Xia Song、Chang-Ji Zheng、Xian-Qing Deng、Qing Wang、Shao-Pu Hou、Ting-Ting Liu、Xiao-Lan Xing、Hu-Ri Piao
DOI:10.1016/j.ejmech.2012.05.023
日期:2012.8
Five series of (Z)-5-(4-(2-oxo-2-phenylethoxy)benzylidene)-2-thioxothiazolidin-4-one derivatives (I-V) were synthesized, characterized, and evaluated for their anti-bacterial activity. Most of the synthesized compounds showed potent inhibition against several Gram-positive bacteria (including multidrug-resistant clinical isolates) with MIC values in the range of 1-32 mu g/mL. Compounds IIIi, Vb and Vc presented the most potent activity, showing four-fold more potency than norfloxacin (MIC = 8 mu g/mL and 4 mu g/mL) and 64-fold more activity than oxacillin (MIC > 64 mu g/mL) against MRSA CCARM 3167 and 3506 strains with MIC values of 1 mu g/mL, and 64-fold more potency than norfloxacin (MIC > 64 mu g/mL) and comparable activity to oxacillin (MIC = 1 mu g/mL) against the QRSA CCARM 3505 and 3519 strains. None of the compounds exhibited any activity against the Gram-negative bacteria Escherichia coli 1356 at 64 mu g/mL. (C) 2012 Elsevier Masson SAS. All rights reserved.